Seat back



F. H. GIBBs SEAT BACK Filed sept.` 17. 192s .All 1.1111

Patented Apr. 10,1928@ i FREDERICK E. eines, 'on isiaooELrN,v NEW YORK,- AssIeNor. 'ro AMERICAN GARAND EoUNnnY COMPANY7` 0E NEW YOEK, N. Y., A CORPORATION 0E :NEW JEEsEY.

' ,ysEAT BACK; l

:Appflicatiinea septfnibe'r 17, i926. seal im.,136,092.2';kv e l f l l .This invention. vrelates tof Seat back )Construction, and is especially adapted and advantageous for motor bus seats andthe like,

where the space betweenseats is necessarily limited, and it is desirable to afford passengers'k as much room as possible with `the closest` possible seating, The invention also' aords ,the advantage oi a strong backing vll.)

' embodying the `*present invention; e Fig. 2 is a rearl View of the seat back with to sustain they springs :of va spring'p'cushion back. 1 4

`he accorn'panyingI drawings illustrate the preferred forni of the inventionthough itl istcfbe .understood .thaty the invention is not limited to the exact details ofconstruction shown `and described, as itis obvious that"v various rnodilications thereof'within the scope of theA claimsl will occur to persons 1 skilled in thefart.` p

.In said drawings: f f lFig.l1 is an end viewuof amotor bus ,seat

fits supporting standards;

Fig. 8 shows a verticalsection through the seatv back, taken as indicated by thel line 13j-3 in Fig. 2;

Fig.. 4 shows a fragmentary horizontal i, section through the'seat back, taken as indicated by the line 1 -4 in Fig. 2.- p. Fig. 1 shows an ordinary form of motor bus seat, including end frame structures 5, a cushioned seat 6, a cushioned back 7 and supporting structure indicated in dot and dash lines at 8. .A

.The'cushion back 7 comprises an outer frame 9 consistingof end members 10, 10 and top andbottom members 11, `12. The cushioning includes a first canvas or the llike 13 over the helical springs 14, a cover 15V of any suitable material, and one vor ymore interposed stuiing layers 16 and 17. They lirst canvas 13 and the cover lhave their j margins turned over around the outer edges of the cushion iframe' 9 and secured thereto in a rabbet a aty the back. Adjacent the first canvas 13,fthe helical springs 14 are spaced apart. and held in position by framingindicatedfat 19. p Thel rear ends ofthe springs bear against/and are lsustained by the cushion frame 9 and by the .back` plate fv20,"presently to be described. The upward extendingstandards or arms`21 of the end V`structures 5 are of anvangular section, so

'pas to extend behind the frarneends` 10 as vvcurely mounted so Yas well vto.overlap their 'outer edges.v *Asi shown i'nFig.r4 1,t these standards 21ar'e1se# cured to the 'couter `edges of the frame'ends l 10 by screws 22.

In thepresent ins-tance, the. sheet inevitaljA i back plate ,20 ,Whichfis preferably fforme'd from a single sheet, covers and closes the p rear Oi the cushionframe 9 in one piece.

and top frame members 10, 10 ,and 1 1,- and may be secured to them in vany suitable man ner. The vplate is provided with a trai/isA versely` extending corrugation forming a lhorizontal and preferably integra-l'bra'ce 25" 'l y,

extending from endto end'fof the rame9,

Abetween the corresponding marginsgjthis' 'brace'is here' ,shown as ofjc'hannel form'with the channel webin thei plane 'of the margins.,

Above and'belowithefbrace'25, the plate 20 is' recessed' or 'depressed p'a'n'elwisev substantially in-.conforlnity tothe inner back frame l outline, as indicated at 26 and 27. The

recess 26 is inthe form of an integral stiff,

ening -corrugation extendingl substantiallyv across the seat-.and being bounded by thel .corrugation 25, the upper. rail portion 26a 'Y and the end frame member cover-portion 20 of theback plate. fThevlower margin of the plate 20, yit willA be observed,vfor`ms a pro` longationof the lower recessed panel 27, and overlaps the lower frame member 12,-which is set forward with reference to the plane of the rear surfacesV of the frame' ends-10,\as

shown in Fig. 3. Thisfeature aifords those inthe seatbehind full advantage of the increased space between'seats-due to the recesl sion lor depression vof the lower panel 27:`

1. e., there is no projection of the bottom frame memberl() at thelower end of the panelV 27 tol diminish thee'ective space.-

As shown in Figs. 2 Aandv 3, provision may be madefor mounting an advertising'card 30 in the upper panel recess 26, as by means lsecuredA to said panel adjacent its upper and lower edges. 'By entering and engaging the corresponding edges of the Vcard 30 between of upper and lower joggled strips J31, '32"' and behind the outstanding edges .ofj these Y Y retaining vstrips31,32, the cardcan be see' y vto ybe easily removed or.v

replaced. Y v What is claimed is.: I v 1..v Aseat back comprising a,

frameandal f i l sheet metal plate securedA thereto, saidI` plate having marginal flanges and an inte ralvhorizontal reinforcing brace extending romr side to. side'of the frame and delininga recess above and. below said brace, saidy recesses and saidfintegral brace beingA positionedvvithin K the plane of the frame.

2. A seatback construction comprising inf combination With angular seat back stand-` ards a. seat backV Vframe"havin'gja'top meme' ber, end :members engaging said standards A and a bottomVV member set forward with reference vtothe rear surfaces of saidend members, and a sheet metal'baclry pla-te margin-l ally overlapping the top member and the end membersandhaving acontinuous horizon;

tal:l channelfbrace connecting the end-mem-` V Y' Ybers/said platev being "recessedbehind' the planeof the (margins above the brace and to'. the plane of the bottom frame' member belowA 3." In a cushion-seat, a` frame havingi top,

' bottom and side members, aback comprising.

plate having anangular `upper, end portion andangnlarside portions, said portions definingA attaching flanges and bearing. surn L faces, the latter being adapted to seat against theinnerlsides .ofthe top and side members whereby to position. Vsaid 4plate vWithinv the "lane of the frame, and; a continuous rein- )rc'ingbracek VformedinA said ,fpliaite.trans-Y verselyl thereof and extending between the side members.

Y' t. In a cushion'seat, a` frame Vhaving top, bottomand side members, a back comprising ga `plate having an angular upper end portion Y and Vangular side portions, saidy portions defining attaching flanges and bearing Vsurf faces, the latter being adapted to seat against the inner sides of the top and `side members whereby to position said plate Within the planeet-'fthe frame, andV a continuousreinversely thereof ,and Vextendingbetween lthe side members, With V.ther Web` thereofv Within the plane ofthe frame'. Y 'A v i 5. In a cushion seat, a frame having side members, a top member and ai bottom VmemberY set` forward,y With respect to the top tween the sidemembers With. its web `Within the plane of saidk frameside members n In Witness Whereof'I have yhereunto set my hand.

f remission ein-Bs;

'forcing' brace .formed in said plate transfV Y55v i reinforeing'f'channel' brace formed iny'said -plate transversely thereof and extending `be'-k 

